public function testSign()
{
$keyPair = KeyPair::generateKeyPair(2048);
$secretKey = $keyPair->getPrivateKey();
$publicKey = $keyPair->getPublicKey();
$plain = 'This is a message.';
$signature = EasyRSA::sign($plain, $secretKey);
$this->assertTrue(EasyRSA::verify($plain, $signature, $publicKey));
}
public function testFailure()
{
try {
KeyPair::generateKeyPair(1024);
$this->fail('Accepts too small of a key size!');
return;
} catch (\Exception $ex) {
$keyPair = KeyPair::generateKeyPair(2048);
}
$secretKey = $keyPair->getPrivateKey();
$publicKey = $keyPair->getPublicKey();
$plain = 'Short Message';
$encrypt = EasyRSA::encrypt($plain, $publicKey);
$dissect = explode('$', $encrypt);
// Flip a bit in the key, randomly!
$dissect[1] = base64_decode($dissect[1]);
$l = mt_rand(0, strlen($dissect[1]) - 1);
$dissect[1][$l] = \chr(\ord($dissect[1][$l]) ^ 1 << mt_rand(0, 7));
$dissect[1] = base64_encode($dissect[1]);
try {
EasyRSA::decrypt(implode('$', $dissect), $secretKey);
$this->fail('Checksum collision or logic error.');
return;
} catch (\Exception $ex) {
$this->assertInstanceOf('\\ParagonIE\\EasyRSA\\Exception\\InvalidChecksumException', $ex);
}
$dissect[3] = substr(hash('sha256', implode('$', array_slice($dissect, 0, 3))), 0, 16);
try {
EasyRSA::decrypt(implode('$', $dissect), $secretKey);
$this->fail('This should not have passed.');
} catch (\Exception $ex) {
$this->assertInstanceOf('\\ParagonIE\\EasyRSA\\Exception\\InvalidCiphertextException', $ex);
}
///////////////////////////////////////////////////////////////////////
$dissect = explode('$', $encrypt);
// Flip a bit in the message, randomly!
$dissect[2] = base64_decode($dissect[2]);
$l = mt_rand(0, strlen($dissect[2]) - 1);
$dissect[2][$l] = \chr(\ord($dissect[2][$l]) ^ 1 << mt_rand(0, 7));
$dissect[2] = Base64::encode($dissect[2]);
try {
$dummy = EasyRSA::decrypt(implode('$', $dissect), $secretKey);
$this->fail('Checksum collision or logic error.');
unset($dummy);
return;
} catch (\Exception $ex) {
$this->assertInstanceOf('\\ParagonIE\\EasyRSA\\Exception\\InvalidChecksumException', $ex);
}
$dissect[3] = substr(hash('sha256', implode('$', array_slice($dissect, 0, 3))), 0, 16);
try {
EasyRSA::decrypt(implode('$', $dissect), $secretKey);
$this->fail('This should not have passed.');
} catch (\Exception $ex) {
$this->assertInstanceOf('\\Defuse\\Crypto\\Exception\\WrongKeyOrModifiedCiphertextException', $ex);
}
}